Claude Fable 5 gave users access to Mythos-class power, but its hidden safeguards turned a safety feature into a trust problem for Anthropic.

Anthropic launched Claude Fable 5 with safeguards for high risk tasks while limiting Mythos 5 to trusted cyber partners.

Anthropic said it could not yet release the full Claude Mythos 5 model, so instead it created Fable 5 with baked in safeguards.

Anthropic launched Claude Fable 5, its most capable consumer-facing AI model to date, but with a few guardrails.

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This version comes with guardrails that block some of its most powerful capabilities

AI company restricted access to Fable 5, its most powerful Mythos model, for months over cybersecurity concerns

One step further into the power politics of frontier AI systems.

Anthropic launches Claude Mythos 5 for restricted cybersecurity use and Claude Fable 5 for the public, splitting its most powerful AI model into two tiers.

Anthropic has launched Claude Fable 5, the first publicly available version of its Mythos-class AI model. The launch of this AI model comes roughly two months after Mythos was…

Anthropic, maker of the Claude artificial intelligence (AI) models, made the most powerful version of its technology available to the general public

Anthropic split Fable 5 and Mythos 5 by cyber safeguards, giving vetted defenders stronger capabilities while limiting public misuse.

Claude Fable 5 is designed to tackle complex projects over days or weeks with minimal human oversight, while its unrestricted sibling remains limited to security and critical…

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Anthropic has unveiled Claude Fable 5, a model similar to Claude Mythos but with major cyber barriers blocking risky prompts and replies.

Anthropic unveils Claude Fable 5, a powerful, safe Mythos-class AI model designed for diverse applications and enhanced performance.

Anthropic has launched Claude Fable 5, its most capable publicly available AI model, excelling in complex tasks and benchmarks. Alongside it, Mythos 5, a restricted version with…

Anthropic released a 'safe' version of Claude Mythos — and changed its data retention policy for the model, too.

Anthropic's Claude Fable 5 faces backlash from cybersecurity researchers who say its safety classifiers block legitimate vulnerability research and

A paragraph buried in Fable 5's 319-page system card revealed the model would silently downgrade its responses for certain AI development work — without telling users.

A paragraph buried in Fable 5’s 319-page system card revealed the model would silently downgrade its responses for certain AI development work—without telling users.